顽固而持续的腰背痛伴放射性神经根痛的疾病是（）。
A.佝偻病
B.脊椎退行性变
C.脊椎结核
D.强直性脊椎炎
E.脊椎肿瘤
参考答案：E
It seems you need to apologize quickly ______ a good friend.
A．avoiding to lose
B．to avoid losing
C．avoiding losing
D．to avoid to lose
鼓肚属于内部缺陷。。
